Home / 7,876.60-11,815.12-2,945.30

Finding the Fourth Proportional to 7,876.60, 11,815.12 and 2,945.30

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Solution

The fourth proportional to 7,876.60, 11,815.12 and 2,945.30 is: 4,418.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,876.60 : 11,815.12 = 2,945.30 : x
  2. Step 2: Convert to fraction form
    7,876.60/11,815.12 = 2,945.30/x
  3. Step 3: Cross multiply
    7,876.60x = 11,815.12 × 2,945.30
  4. Step 4: Simplify right side
    7,876.60x = 34,799,017.54
  5. Step 5: Solve for x
    x = 34,799,017.54/7,876.60
  6. Step 6: Final answer
    x = 4,418.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.